A biofilm sewage treatment device and biofilm in-situ testing method

Abstract

The invention discloses a biofilm sewage treatment device and a biofilm in-situ testing method. The device comprises a concave water tank, a biofilm carrier disk, a rotating shaft, a rotating shaft driving device, a water inlet system and an effluent collecting system. The device disclosed by the invention has two functions of sewage treatment and biofilm in-situ sample collecting and testing; the biofilm in-situ test on the carrier disk is carried out through dismounting a biofilm test strip on the biofilm carrier disk, so that the ubiquitous problem that a biofilm sample is difficult to collect in the process of testing by keeping the original structural form of a biofilm in the traditional biofilm sewage treatment device is solved; a synchronous motor is driven by a pulsed power supply to drive the biofilm carrier disk to rotate around a fixed shaft, so that the real-time continuous regulation of the rotating speed of the fixed shaft is realized, the necessary guarantee is provided for maintaining the integrity of the structure of the biofilm and quantitative simulation of a shearing force on the surface of the biofilm, the difficulty for regulating the rotating speed of a traditional gearbox in real time is solved, the economic cost of the device is reduced, and the area occupied by the device is reduced.

Description

technical field [0001] The invention relates to a biofilm sewage treatment device and a biofilm in-situ test method, belonging to the technical field of biofilm sewage treatment and in-situ test of biofilm on the surface of a carrier. Background technique [0002] Biofilm is a film-like substance composed of microorganisms, their surface secretions, and other impurities. Biofilm is used in sewage, mainly by using the microorganisms in the biofilm attached to the solid surface to metabolize and transform organic matter, ammonia nitrogen, phosphorus and other substances in sewage to achieve sewage purification. Biofilm method is a conventional process for sewage treatment. It has less residual sludge production and strong water quality adaptability. It is especially suitable for treating low-concentration sewage, such as surface water and aquaculture sewage. Since biofilm is the core of sewage treatment system, it is necessary to deeply understand the relationship between bio...

AI Technical Summary

Problems solved by technology

However, this traditional research scheme cannot reflect the internal texture structure of the biofilm, the mass transfer process inside and outside the membrane, the adhesion of the biofilm on the surface of the filler, the shedding of the biofilm, the space of microorganisms and their secretions, and the biofilm under the real conditions of the surface of the filler. Distribution characteristics, microbial colony structure

In addition, the surface area of ​​the biofilm filler is small, and it is extremely difficult to observe the biofilm on the surface with a microscope, and the accuracy is difficult to guarantee.

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